Light-altering paint for greenhouses could help lengthen the fruit growing season in the UK
>formatting linkSummary:
> New spray developed by scientists could help boost UK farming and increase the UK's food security.
>
> Paper:
>formatting link
> stuff they use, quote:
> '
> In this paper, we develop an approach based on readily prepared and cheap
> Eu3+-containing polyoxotitanium cages (Eu-POTs) which, we show,
> possess the necessary design features listed before.
> Having established the ground rules for selective modification,
> we introduce a working prototype luminophore with high PLQY (>60%)
> which is soluble in a range of commercial plastics, including water-based
> acrylic paint that can be sprayed onto conventional glass greenhouses
> in an agricultural environment.
What you needed to say - and didn't - was that the luminophore absorbs wavelengths shorter than red, and re-emits the energy at a wavvelength in the red which is efficiently absorbed by plant chlorophyll.
The article talks about UV light - though there's not a lot of that in sunlight, and even less in English sunlight - so it's not exactly helpful.